html,
body {
  margin: 0px;
  padding: 0px;
  background-color: rgb(30, 30, 30);
  height: 100%;
  width: 100%;
  display: flex;
  flex-direction: column;
  font-family: Arial, Helvetica, sans-serif;
}
.titleBar {
  -webkit-app-region: drag;
  height: 38px;
  line-height: 38px;
  background-color: rgb(60, 60, 60);
}
.titleTool {
  -webkit-app-region: no-drag;
  height: 38px;
  float: right;
  color: white;
  line-height: 38px;
  display: flex;
  justify-content: flex-end;
}
.titleTool div {
  text-align: center;
  width: 42px;
  height: 38px;
  font-size: 13px;
}
.titleTool div:hover {
  background-color: rgb(80, 80, 80);
}
.closeBtn:hover {
  background-color: rgb(251, 21, 38) !important;
}
